Update and clarify “Release Cycle” section to reflect current major release cadence

[tomdevisser]

Issue Description

The Contributor Handbook page on “Release Cycle” refers to a 4-month major release cycle, but the official WordPress Roadmap now states that the goal is one major release per year. This inconsistency may confuse contributors trying to understand the current release process.

URLs of the Pages with the Issue

​https://make.wordpress.org/core/handbook/about/release-cycle/ (Contributor Handbook)
​https://wordpress.org/about/roadmap/ (Roadmap)

Why is this a problem?

The outdated reference to a 4-month cycle contradicts the newer roadmap and creates confusion for contributors, especially those trying to align their work or expectations with current WordPress release planning. Maintaining consistent documentation is important for trust and clarity in the contributor experience.

Suggested Fix

Update the section to reflect the current release strategy — i.e., one major release per year — as stated on the roadmap. If there’s uncertainty or plans are still evolving, it may be helpful to add a note acknowledging the shift in cadence and link to a relevant discussion or policy decision for context.